Improvement in ice-machines



Franz mnd/awww sszl'gm/ilnw/b Sdziwl'flcr, Tucdee JIJ/m v9.15' lat??? Y fc5 Machine. PATENTE .IAN241871 description thereof, reference being had to the specification.

i machine in perspective; Fig. 2, Sheet 1, in

D, and D' inclosed ih the cylinder; the pipes E'and E', for the introduction of water; thebe seen,

' to-V the circumference that they push in the` reservoirs F and F', the Water injected in front UNITED STAT-ns PATENT OFFICE...

FRANZ wiNDHAUsEN, oir-BRUNSWICK, GERMANY, AssIGNoR To Louis SCHNEIDER, o. T. BUDDRGKE, AND JOHN A. RLAFFRR, or NEW ORLEANS, LOUISIANA.

IMPROVEMET IN ICEMACHINES.

specification forming pm of Leners Patent No. 1i 1,293, dated January 24, 1871.

To all whom 'it may concern: v

Be -it known. that I, FRANZ WINDHAUSEN, of the-eity of Brunswick, Germany, have invented certain new and useful Improvements in Machines for Making Ice, and for General Refrigerating Purposes; and I do hereby declare the following to be a full, clear, and exact drawings furnished andforming a part of this The machine is represented on the accom-' panying drawings, Sheets Nos. 1 and 2,. viz.: L

Figure 1, Sheet 1, represents my improvedvertical longitudinal section; Fig. 3, Sheet 2, view from above; Fig. 4, Sheet 2, front view of the machine.

In all the igures the same letters'designate'I like parts.

The machine is composed essentially of the* cylinder A, tile front and back covers B and B', connected with'the above; the pistons C,.

reservoirs F and F' below the cylinder, together with the self-acting valves G and G' therein; the air-sucking valves H and H' the screws; Vthe mechanism pistons D and D'.

All the above-mentioned L, for moving thev parts are, as will Vconnected together and fastened on the bed-plate. The connection is such that by turning the crank the piston C in the cylinder A describes a reciprocating movement from d to b. In the middle, between aand b, the cylinder is provided with openings M, through which the expanded air` can escape in the annular channel N, and thence farther through the valve J. The pistons D' and D are made as light as possible of thin tin. They are free on the piston-rod C', movable, and so adaptedv of and behind the piston C through the pipes E and E'. Their movement is .limited within4 bot-h ends of the cylinder and extend to the openings M. It is accomplishedl on the one side by the piston C, which, carries them'from X, which extends through the cylinder A, protruding beyond each head. The pistons D- and D', while they are supported by the main piston-rod, andare moved by the piston C from a point near the middle of the cylinder to the points indicated as a and b, are moved `from these points still farther in the same direction by the rod X, by the 4counter-crank L3 and its connections. So, also, the pistons .D and D' are moved by this rod from the y ends of the cylinder toward the delivery-ports' M. This movement of the pistons lD and D' I is e'ected by means of collars fixed upon the rod X at proper intervals, which engage with Y ftheI pistons at about the time the piston C 4lceases to advance toward their respective. 5 ends. Upon the-return movement of the piston C the pistons D and D' remain at rest until other corresponding collars on the rod X 2 engage therewith and cause them to move tovalve J for emitting air', the two pistons K and.` y

K', arranged so as to be moved by means of ward the middle of the cylinder.

The followingis the manner of performingthemachine: The machine is set in -motion by turning the crank, which moves the piston .from b toa. Thereb air is sucked in through the valve H' in the irection of arrow 1.

On theretrogrademotion of the piston from a to b, the quantity of air in frontof the piston from a. to the opening M escapes through the latter and the valve J. On the farther ad` Vance of the piston'from the mentioned opening M to b, the air in front of the piston is compressed, and at the same time, during that operation,'cooled by the Water injected at E'. On tlieback stroke of the piston, the air previously compressed is expanded, and is thus cooled, according to the degree of expansion. After the air has been allowed to expand to a litttle below atmospheric tension, the valve II opens by outside atmospheric pressure, and atmospheric air is admitted in the cylinder .until the piston C hasreached b. 0n the retrograde motion of the piston, the air, which These parts L5 and lLs come in contact with the ends of the rod already described.

following specific functions: First, to push. the injected water out of the cylinder into the f reservoirs F and F'; second, to guard the pishas been cooled, is ejected ,through the valve J, and the fresh air admitted by the-valve H is again compressed and expanded 1n the manner -inst described. In exactly like manner the above-described acts are performed in the rear .of the piston. It is in order that'the air sucked vby the valves H and H' should remain.

separated from the expanded air thatthe aux-V iliary pistons D and D', above described, are placed in front and rear of thepiston G, as They perform., also, the

ton G- from being heated by the compressed air and the'injected cool water; third, to effect, by their particular motion, the expulsion of all the expanded ai'r through the valve J. The relative position of these pistons to the piston C, at Athe different stages of motion, is as follows: When the piston C moves from b to a.,

the piston D remains immediately opposite thev opening M until it is reached by the piston C, and then it is carried along to a, and thence moved farther on.- toward the end of the cylinder by means of the continued movement of the counter-'crank L3 and its connecting rods.. 0n thew'ayi'rom a to the end of the cylinder, the compressed air escapes, through piece lL5 attached to the rod L, while the crank is performing one-fourth of a revolution; (See Fig. 3.) .At the same time atmos-` pheric air is admitted through the valve H, and, as during this movement the pistonD describes a larger space than the piston C, a larger quantity of expanded air is accordingly ejected through the valve J. On the vback stroke of the piston C, the piston D iuds itself again in fron't'of the openings M, and the tween these two pis-tons is expelled through the valveJ. Just .the same performances as before described take place in the cylinder on the other side of the piston. The4 eoo'lwater is introduced, viz., injected into the cylinder,

' by means of well-known pumps, through the perforated mouth-pieces E and E', but only at the moment when the pistons D and D'are carried outof the middle of the cylinder, by

the piston C, toward the end of the same. The

Water is removed from the reservoirs F and F' by the self-acting valves G and G', which are,

in fact, iioats, and so light that, by aporrespending stage of the water and atmospheric pressure in thcinteriorof the cylinder A, they open by hydrostatic power, which takes place every time when on the respective side in the cylinder the air is expanded to atmospheric Q and K'. expanded and highly-cooled air inclosed be'-1 already described above.

pressure. On the other hand, the valves Grand G' remain 'closed 'when the air on the respective side is compressed. Finally, the .pistons K and K' are to be mentioned. They arc fixedin corresponding cylinders above the valves H and H', and are movable by means of the adjusting-screws Q and Q'. They serve to regulate the degree of compression of the. 'air, for, by them, the space to which the quailtity ot air in front and in the rear ot' the piston C is to be compressed maybe enlarged or diminished Within certain limits.

As a modiiicationof the machine already described, I include in my application for patent the mechanism exhibited on Sheets- 3 and 4 ot the drawings, in which independent -letters of reference are used.

Fig. 5 represents a vertical section. Fig. 7 represents a cross-section, 0 0 S S. Fig. 6 represents a view from above. Fig. 8 repre- 4sents a front view of the machine.

The machine 4is composed of the cylinder A; the piston and piston-rods C and C' the cylinder-covers B and B the -tubular apparatus E.and E' on both sides in the interior of the cylinder A; the cloak-pistons D and D' (man- -tel kolben 5) the aspiration-valves F and F';

the expiration-valve G.

The construction of the cylinder is as follows: In themiddleof the cylinder the'openings M are employed in the same manner asin the machine before described. At both ends of the cylinder is placed a tubular air-cooling apparatus E andv E', in connection with the 'cylinder-covers, so xed that the former leave open between themselves and the cylinder-wall a free annular concentric space, in which the likewise concentric annular cloaks d and d' of the pistons D and D' are easily movable. Fur- 4 ther, around the cylinder Aare placed, at both ends and castwithit, concentric annularchambers fand f', which, filled with water, serve also as cooling apparatus. The cooling water runs in the latter through the tubes H andH', and afterward through the tubes J and J in the inner tubularcooling apparatus, and thence the water flows oft' again through the tubes K Between the tubular cooling apparatus is comprised the space in which the pistou C is moving, and midway are the openings M, The piston C is of ordinary construction.- The piston-.rod traverses both cylinder-covers, and is putin connection with any known mechanical power, so

that the to-and-fro motion of the piston, from a to b and vice versa, is thereby ei'ected. The

pistons D and D' are on both sides of the piston-rods C, and are easily movable on the piston-rods C1. They are moved along on the one side by thel pistonv C to the limit ascribed tothe piston, and on the other side by the knobs C2 and O3 on the rod Glfrom the end of the cylinder to the opening at M.

It will be observed that the pistons D and D' are provided withjnumerous perforations,

`through which air, in process of compression,

coo1ing,and expansion, freely passes.

The operation ofthe machineV is as follows: If the piston C be moved from a to b the piston D will remain stationary at a until the knob C2 moves against the latter. At this instant C is before the openings M. It passes the same and takes along the piston D, and compresses the air in the front halt' ot' the cyl'- inder.V The heat of the air generated by that process is taken up by the cooling apparatus E, While at the same time the direct contact ot' the heated air with the cylinder-Wall and the piston C is prevented by the cloak-Wall of the piston D. On the moving back of the piston C from a to b the` previously-compressed air expands and passes through holes in the piston D immediately behind the piston C. NVlien the latter arrives before the openings M the piston D is taken along and atmospheric air is sucked in at the saine time through the Valve F. On the back stroke of the piston C the air in front of it is expelled through the opening M, the channel N and the valve G, and when the piston `moves farther on the atmospheric air sucked in is again compressed.

The operations above described are performed in a like manner on the other side of the piston.

I designate as novel in the above-described machinel. The eduction-ports M, located in the Walls Vot the cylinder between the ends, and so arranged with relation to the inductionrvalves that air introduced into the cylinder at either end will be discharged after having been compressed, cooled, and expanded through said openings, as described.

2. In combination with the cylinder A and piston C, the pistons Ki and K', With their chambers and connecting passages, the Whole being so arranged that by the raising and lo\v ering ot' the pistons the both .sides ot' 'thepiston U lessened, as described.

3. Thev combination ot' the main 'piston C and auxiliary pistons D and D', arranged Within the cylinder, substantially as and for the purposes herein described. 4. In combination with the cylinder ot an ice-machine providedA With an intermittent water-injecting apparatus, the reservoirs F and iioat-valves G, the latter being so arranged that their natural buoyancy Will open the valves, and the pressure Within the cylinder will close them, substantially as described.

5.' In combinationA with the cylinder of an ice-machine, the compression, -cooling, expansion, and ejecting apparatus, so arranged that the several processes will bc eected within thesame cylinder at each and every complete 'e stroke ot' the piston, substantiallyas described.

FR. WIND HAUS Witnesses CONRAD LWe, C. Lienz.

interior lspaces on will beincreased orD 

